[PATCH] Show dissimilarity index for D and N case.

The way broken deletes and creates are shown in the -p
(diff-patch) output format has become consistent with how
rename/copy edits are shown.  They will show "dissimilarity
index" value, immediately following the "deleted file mode" and
"new file mode" lines.

The git-apply is taught to grok such an extended header.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/apply.c b/apply.c
index 3160207..74908cd 100644 (file)
--- a/apply.c
+++ b/apply.c
@@ -336,6 +336,11 @@ static int gitdiff_similarity(const char *line, struct patch *patch)
        return 0;
 }
 
+static int gitdiff_dissimilarity(const char *line, struct patch *patch)
+{
+       return 0;
+}
+
 /*
  * This is normal for a diff that doesn't change anything: we'll fall through
  * into the next diff. Tell the parser to break out.
@@ -437,6 +442,7 @@ static int parse_git_header(char *line, int len, unsigned int size, struct patch
                        { "rename from ", gitdiff_renamesrc },
                        { "rename to ", gitdiff_renamedst },
                        { "similarity index ", gitdiff_similarity },
+                       { "dissimilarity index ", gitdiff_dissimilarity },
                        { "", gitdiff_unrecognized },
                };
                int i;

diff --git a/diff.c b/diff.c
index d5881c7..d7cde8f 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -132,10 +132,16 @@ static void builtin_diff(const char *name_a,
                            diff_arg, input_name_sq[0], input_name_sq[1]);
 
        printf("diff --git a/%s b/%s\n", name_a, name_b);
-       if (!path1[0][0])
+       if (!path1[0][0]) {
                printf("new file mode %s\n", temp[1].mode);
-       else if (!path1[1][0])
+               if (xfrm_msg && xfrm_msg[0])
+                       puts(xfrm_msg);
+       }
+       else if (!path1[1][0]) {
                printf("deleted file mode %s\n", temp[0].mode);
+               if (xfrm_msg && xfrm_msg[0])
+                       puts(xfrm_msg);
+       }
        else {
                if (strcmp(temp[0].mode, temp[1].mode)) {
                        printf("old mode %s\n", temp[0].mode);
@@ -733,6 +739,16 @@ static void diff_flush_patch(struct diff_filepair *p)
                        p->one->path, p->two->path);
                msg = msg_;
                break;
+       case 'D': case 'N':
+               if (DIFF_PAIR_BROKEN(p)) {
+                       sprintf(msg_,
+                               "dissimilarity index %d%%",
+                               (int)(0.5 + p->score * 100.0/MAX_SCORE));
+                       msg = msg_;
+               }
+               else
+                       msg = NULL;
+               break;
        default:
                msg = NULL;
        }